Pressure mechanism for fasteninginserting machines



March 21 1939. J. F. STANDISH 2,151,054

PRESSURE MECHANISM FOR FASTENING-INSERTING MACHINES Filed Jan. 11, 1938 Tigrl.

Patented Mar. 21 1939 PATENT OFFICE 2,151,054 PRESSURE M cimmsM' FoR FASTENING INSERTING MACHINES John Standish, =Winthrop,

Mass, assignor to I I United Shoe Machinery Corporation, Paterson,

N. J., a corporation of New Jersey application January 11, 1938, Serial No. 184,444

15 claims.

My invention relates to mechanism by which work is held in place upon; its support to receive fasteninesi It is lierein'disclcs'edin connection with apparatus for attaching heelsto shoes by an appli'edfheel. 4 1

In heeling shoes, a well known and highly eflicient hold-down mechanism utilizes a pressuree compensating arrangement fiinwhi'ch the tread and rear heel abutment members are carriedby slides connected by gearing, which, as one member' engages its'po'rtion "of the heel,'n1ove's the other into engagement afidt hereafter tends to nails driven through the heel=seat of a "shoe into equalize the forces applied over the two areas. 15 Conditions are sometimes en-countered in which I this compensating connection introduces difliculties. The nails drivenjat the rear of a heel having considerable forward pitch, will act upon the horizontally extended rear portion through a leverage which exerts an upward displacing "'el fect' stronger than that "existing toward the breast of the heel. This raises therear abutment and;

through the connecting aring owers thetread= abutment. The downward force exerted by the g, latter may crush the heel or'deforin its covering.

It is anobject of this invention to guard against this application or'u equ'a pressure. H

-n :accomplishing theabove result, I employ pressure mechanism having a carrier member, a with work-engaging members, as tread and rear abutm'ents, movable "relatively to each other upon the carrier, for examplein'the m'a'n'ner previously indicated. Thereafter, these engaging members togetherand the carrier-member are also mov- ..abl"e'relatively, 'andthere is means made effective 7 in this' last-mentioned movement for locking them against therelative movement between them; When this is done, the forcewhich-they 'eizert is uniform. To produce this'effect, a connect'ing me'inber between the work-engaging members is mounted for a movement of translation upon'the carrier member, and by'relative bodily movement between it-a-nd the carriermem her the lock is applied, asbya brake, to the confleeting member and thus ti) both Wdrk-engag-ing' members. "To determine when this locking action shall be initiat'ed, there is means, as a spring or springs, for resisting the, movement or translation and means 'for varying theresistance. In

the particular embddinillt ef'l'ihe'lhve ntion diS- closed he'reingthe W'ork-e'n'gaging :members are abutments -,which"respectively contact with the tread and rear surfaces'of'a heel 'to be attached, theseabutments'being mounted upo'n slides movable upon the carrier member. Gearing, includ ing a pinion, joins the slides, and this pinion rotates'in bearings movable with respect to the carrier. With the pinion, a disk or disks is rotatable, these being normally spaced from brake members, so the pinion is free to turn and produce the relative movement between the slides, together with the abutments. When, however, the bearings are displaced, as by relative movement of the slides together and the carrier, the br'ake'members engage the disks, and the movement of the'abutments relatively to each other is rendered impossible. Preferably, a balanced action is produced by employing two of the locking disks at opposite sides of the pinion, these being shown as having peripheries which are complemental to locking depressions in the carrier and provided with outwardly converging walls. The entrance of the disks into the depressions may serve to'retain them upon projections from, the pinion, and upon which they are held against rotation, though free to move longitudinally thereon. The assembling of the elements is thereby facilitated.

In the accompanying drawing,

Fig. lililustra'tes a particular form of the inventionin broken side elevation;

Fig.-=2 is a partial, central, transverse, vertical section with the lock applied, and

Fig. 3 shows,'-'similarly, the more essential elements with the lock need.

In the drawing appear portions of a commercial form of machine for attaching heels by inside nailing. This includes a jack 1D with one of its drivers l2, by which nails N are inserted, and an opposed vertically reciprocatory pressurehead' M in which a carrier-slide I6 is horizontally movable in ways l'8 extending from front to rear of the machine. Adjustment of the carrier in the "ways may be eiiec'ted by a screw 20. Guides for vertical movement in the carrier are spaced'slides 22,'-24. These slides have respectively mounted at their lower extremities an abutment in the form of a plate 26 arranged for contact with the tread-surface of a heel H, which has been applied 'to a shoe S supported on the 45 jack l0, and an abutment furnished by a fork 28 for engagement with the rear of the heel. The

a heel H to its heel-seat and lowered the pres ing the rear slide to the carrier. This holds the tread-abutment normally lowered to a point determined by the height of an adjustable stopscrew 36, with which a portion of the rear abutments contacts when elevated by the spring. When thus organized, as the head. 14 is lowered the abutment 26 will first engage the tread-surface of the heel being operated upon. The travel of the abutment 26 being arrested, the pinion would be rotated in the continued downward movement of the head to lower the abutment 28 until this, too, engages the heel. Thereafter, as further pressure is exerted, there being no displacing force, the two abutments would hear equally. The balance of forces may, however, be disturbed,as already pointed out, and to prevent this, I have improved the mechanism in the following manner.

Instead of having the axis of the pinion fixed upon the carrier, 'it is arranged for movement longitudinally of the slides 22 and 24. At its opposite sides are axialprojections 40, 40, which receive circular disks 42, 42. The ends of the projections are shown as squared at 46, 46 and thus hold against rotation the hubs 48 of the disks. The exterior inner portions of the diskhubs turn in bearing-blocks 52, 52 arranged for vertical movement of translation in ways in the carrier 16. The pinion and disks may be held downywith the bearing-blocks resting upon surfaces 54, 54 of the carrier, by springs 56, 58 interposed between the blocks and screws 58, by which the force exerted on the. springs maybe varied. The periphery 60 of each disk is wedgeshaped, converging outwardly, and when the pinion-and-disk-assembly is held against movement as the carrier [6 descends, the upper portion of the peripheries of the disks are engaged by walls of complemental segmental depressions 62 inthe carrier. There may thus be applied two brake devices to hold the pinion against rotation. A movable cover-plate 64 secured in place by screws 66 at one side of the carrier, allows'the pinion-disk-assembly withits bearing-blocks to be positioned. With the disk opposite the coverplate and its bearing-block in place upon the carrier, the periphery of the disk being in the depression 62, the pinion carrying the other bear-.

ing and disk may be applied, and the coverplate secured upon the carrier. Displacement of the, disks longitudinally of the pinion-projections is prevented by their entranceinto the depressions. The springs 56 may be introduced through the openings for the screws 58. I

When the operator has jacked a shoe S, applied sure-head l4, the abutment 26 first contacts with the tread-surface of the heel, and then causes the lowering of the abutment 28 to engage the rear of the heel through the racks 30 and the Q pinion 32. At this time, the springs 56 hold the axis of the pinion and thecarrier against relative movement, the elements beingas appears in Fig. 3. The adjustment of the screws 58 is preferably such that the abutment 28 engages the heel before this relative movement occurs. When,

however, both abutments are held by the heel, downward movement: of the carrier continuesto produce a relative movement of translationbetween the pinion-disk-assembly and said carrier, without rotation of thepinion. Since thenormal clearance between the peripheries of the disks and the walls of the depressions is but slight, the opposite inclined surfaces are forced together (Fig; 2), effectively locking the pinion against rotation. As a result ofthis, the relation of the two abutments to the heel which was established securely held without dangerofinjury by the application of unbalanced. forces. Upon release of the pressure-head, the elements which it supports arereturned to their. initial positions'by the springs 34 and 5'6. I

Having described my invention, what I claim as new and desire to secure by Letters Patent of j the United States is: g 1. Pressure mechanism for fastening-inserting:

machines comprising a carrier member, heel-engaging members movable relativelyto each other upon the carrier and thereafter the engaging memberstogether and the carrier being movable relatively, and means madeeffective upon the lastrmentioned movement for locking the engaging members againstmovement relatively to each other. r I '3 r 2. Pressure mechanism for fastening'inserting machines comp-rising a carrier .member, heelengaging members 'movablel relatively: to each other in opposite directions. upon the carrier and thereafter the engaging, memberstogether and the carrier being movable relatively in the same direction, and means made. effective upon the.

last-mentioned movement for? locking the en-' 7 gaging members against movement relatively to each other.

3. Pressure mechanism for fastening-insert-J ing machines comprising a carrier member, workengaging members movable upon the carrier member, a connecting member for communicating movement from one of ther work-engagingv members to the other and itself 'mounted for movement of translationfrelatively' to thecar ment of translation for locking the connecting rier member, andmeans acting upon said movemember against the communication of movement 7 between the engaging members.

e 4, Pressure mechanism for fastening-inserting, machines comprising a carrier'member, work-engaging members movable upon the carrier member, a connecting member for communicating movement from one of the work-engaging members to the other and itself mounted for move.- ment of translation relativelyto the carrier mem- 'ber, means acting upon said movement of translation forlocking the connecting member against the communication of movement between the engaging members, means forresisting the movement of translation, and means arranged to vary the resistance. 7 V 5. Pressure mechanism for fastening-inserting machines comprising. a carrier member, workmember, a connecting member forthe engaging c0 engaging members movable upon. the carrier, 7

members rotatable between saidengaging members, bearings forthe. connecting member and betweenwhich and the carrier member there may be relative movement, and a; brake member acting-on the connecting member upon such'rela- V tive movement.

6, Pressure mechanism for fastening-inserting machines comprising a carrier member, work-en gaging members m0vable; upon the carrier mem her, a connecting member for theengaging members rotatable between" said. engaging members,

bearings for the connecting member and between which andthe carrier member, there may be re1'aings for the pinion guided upon the carrier, a disk rotatable with the pinion, and a brake member from which the disk is normally spaced, said brake member being engaged upon relative movement between the carrier and bearings.

8. In a heel-attaching machine, a carrier, two slides movable upon the carrier, a heel-engaging member mounted upon each slide, gearing connecting the slides and including a pinion, bear- -ings "for the'pinion guidedupon the carrier, a disk rotatable with the pinion, a brake member I co-operating with the disk, and a spring urging the disk away from the brake member.

9. In a heel-attaching machine, a carrier, two

slidesmovable upon the'carrier, a heel-engaging member mounted upon each slide, gearing connecting'the slides and including a pinion, bearings :for the pinion guided upon the carrier, a disk rotatable with the pinion, a brake member cQ-Operating with the disk, a spring urging the disk away 'from the brake member, and means arranged to vary the force exerted upon the disk by the, spring.

' 10. In aheel-attaching machine, a carrier provided with brake-surfaces, two slides movable uponthe carrier and having rack-teeth, a treadabutment mounted upon one slide, a rear abutment mounted upon the other slide, bearings movable longitudinally of the slides at opposite sides of the carrier, a pinion meshing with the rack te'eth and having projections rotatable in a the bearings, and disks rotatablewith the projections at'opposite sides of the pinion for engagement with the brake-surfaces upon relative movement between the carrier and bearings.

11.1 In a heel-attaching machine, a carrier provided with brake-surfaces," two slides movable upon the carrier and having rack-teeth, a tread- 7 abutment mounted upon one slide, a rear abutment mounted upon the other slide, bearings movable longitudinally of thepslides at opposite sides of the carrier, a pinion meshing with the rack-teeth and having projections rotatable in the bearings, and disks rotatable with the projections at opposite sides of the pinion for en gagement with the brake-surfaces upon relative movement between the carrier and bearings, the disks being retained upon the pinion-projections by said brake-surfaces.

12. In a heel-attaching machine, a carrier provided with segmental depressions having walls converging outwardly, two slides movable upon the carrier and each supporting a heel-abutment, said slides having adjacent rack-teeth, bearings guided in the carrier at opposite sides of the rackteeth, a pinion meshing with the rack-teeth and provided with projections rotatable in the bearings, and disks rotatable by the projections and having their peripheries entering the carrier-depressions and formed complementally thereto.

13. In a heel-attaching machine, a carrier provided with segmental depressions having walls converging outwardly, two slides movable upon the carrier and each supporting a heel-abutment, said slides having adjacent rack-teeth, bearings guided in the carrier at opposite sides of the rackteeth, screws threaded through the carrier, springs interposed between the screws and the bearings, a pinion meshing with the raok-teeth and provided with projections rotatable in the bearings, and disks rotatable by the projections and having their peripheries entering the carrierdepressions and formed complementally thereto.

i i. In a heel-attaching machine, a carrier provided with segmental depressions having walls converging outwardly, two slides movable upon the carrier and each supporting a heel-abutment, said slides having adjacent rack-teeth, bearings guided in the carrier at opposite sides of the rackteeth, a pinion meshing with the rack-teeth and provided with projections rotatable in the bearings, and disks movable longitudinally of the projections but compelled to rotate therewith, said disks being journaled in the bearings and having 7 their peripheries entering the carrier-depressions and formed complementally thereto.-

15. Pressure mechanism for fastening-inserting machines comprising a movable carrier, two 

